Using this chart I have formulated the average increase in values for each variable out of: -Critical Hit Rate -Attack+ -Enhances Avatar Attack for the two types of monsters we fight the most, Highish level NMs and Wyrms.

Things to note: Crit Hit Rate has been averaged depending on its +%. PCLAW critical hit assumes the first hit is a critical hit, else it would actually do a lot less than listed. Double Attack+2% is the equivalent of about 1 on the chart, regardless of level of NM. The chart shows different bonuses on the x-axis and the relative damage increase on the y-axis. Attack+ helps Predator Claws more, Critical Hit Rate+% helps Spinning Dive more.

In general, +1% Critical hit rate is worth 4 attack (for Spinning Dive) and 2.5~3 attack (for Predator Claws). This is because Spinning Dive has a higher modifier. It should also be noted that Critical Hit Rate+% bonus remains unchanged no matter what the VIT/DEF of the monster. To summarise:

-When using Spinning Dive, critical hit rate+1% = 4 attack. -When using Predator Claws, critical hit rate+1% = 3 attack. -This means Royal Redingote with Attack+15 augment is the best body piece for SMN damage, unless you have a Summoner's Doublet +1. -Sacrifice Torque is still better than the Attack+5 augmented Beak Necklace. -Summoner's Pigaches is still better than the Attack+5 augmented Errant Pigaches. -The Attack+15 augment is better than the Crit Hit Rate+2% Double Attack+2% augment on Royal Redingote, by about 11 and 14 damage for Spinning Dive and Predator Claws respectively.

That will be my next target, yes. Firstly to find out Avatar Accuracy, then to find out just how much accuracy is granted by Summoning Magic. Enhances Avatar Accuracy will be a little tougher, since if it follows the same trend as Enhances Avatar Attack it will diminish at higher levels.